适用于直流电网的新型直流潮流控制器

A Novel DC Power Flow Controller Suitable for DC Grid

直流潮流控制技术是直流电网中的关键技术之一,对于直流电网的发展具有重要意义。提出了一种新型线间直流潮流控制器拓扑,该电路拓扑结构和控制较简单,可实现线路潮流反转。分析了该潮流控制器的工作原理和运行特性,并搭建了潮流控制器和五端直流输电系统仿真模型,对该潮流控制器进行了稳态、动态以及故障情况下的仿真验证。仿真结果表明,该潮流控制器可实现潮流的有效控制和调节,具有良好的稳定性。

As a key technology of DC grid, DC power flow control technology is of great significance for DC grid development. A novel circuit topology of interline DC power flow controller（IDCPFC） is proposed in this paper with benefit of simper circuit and control system and power flow reversal ability. Operating principles and characteristics of the proposed IDCPFC are analyzed. A five-terminal DC grid is simulated to validate IDCPFC with cases of steady state, dynamic state and fault condition. Simulation results show that IDCPFC can realize effective and stable power flow control.